Off season at Kennywood Park, West Mifflin, PA, near Pittsburgh. Large green coaster is the"Phantom's Revenge." The smaller red-and-white coaster is the "Thunderbolt." The Phantom has a world-class trick design unique unto itself: the SECOND hill is actually larger than the first hill! It drops down a steep hill reaching 85 mph and then a hard 3.5 g left 270 degree turn brings you back up, and through the Thunderbolt!